FM-AM Program Tuner ST-242L

Sony Corporation; Tokyo

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  • Year
  • 1980/1981
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 321444

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 450/10700 kHz
  • Wave bands
  • Broadcast, Long Wave and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: FM-AM Program Tuner ST-242L - Sony Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 110 x 315 mm / 16.9 x 4.3 x 12.4 inch
  • Notes

  • A 3 band AM/FM stereo tuner with an analogue dial. Wih manual tuning and five FM radio station presets. With a 5 LED signal strength indicator, indicators for FM Tuned and FM Stereo, rotary band selector switch (FM. MW, LW), push button switches for FM Program, Mode/Muting and Manual Tuning, 5 FM Programmed Tuning push button switches, on the back a built-on adjustable ferrite bar AM antenna, terminals for AM and FM antennae and a Line Output interconnect cable with RCA phono plugs.

    Specification  
    FM Tuner Section  
    Tuning range 87.5 - 108 MHz
    Intermediate Frequency 10.7 MHz
    Sensitivity at 46dB Quieting
     (at 40kHz deviation)    		 4.0µV (mono), 45µV (stereo)
    Usable Sensitivity IHF 1.8µV, 10.3dBf
    1.6µV (S/N = 26dB, 40kHz deviation)
    Signal-to-Noise Ratio 69 dB (mono), 64 dB (stereo)
    Harmonic Distortion at 1kHz 0.2 % (mono), 0.3 % (stereo)
    IM Distortion 1kHz 0.2 % (mono), 0.3 % (stereo
    Separation 45dB at 1kHz
    Frequency Response 40Hz - 12.5kHz +0.5dB,-1dB
    Selectivity at 300kHz
    (at 40kHz deviation, S/N = 26dB)    		 40dB
    Capture Ratio 1.5dB
    AM Suppression Ratio 48dB
    Image Response Ratio 45dB
    Spurious Response Ratio 70dB
    Muting Threshold 5µV approx.
    Output Level 450mV, 15kΩ (40kHz deviation)
    Antenna Terminals 300Ω balanced, 75Ω unbalanced
    AM Tuner Section  
    Tuning ranges  
      MW
      LW    		 522kHz - 1602kHz
    150kHz - 350kHz
    Intermediate frequency 450kHz
    Usable sensitivity  
      MW 250 µV/m Built-in antenna (1,000kHz)
    100µV External antenna (1,000kHz)
      LW 500 µV/m Built-in antenna (230kHz)
    100µV External antenna (230kHz)
    Signal to noise ratio 52dB (50 mV/m)
    Harmonic distortion 0.3 % (50 mV/m, 400Hz)
    Selectivity 35dB (9 kHz)
    Antenna Built-in ferrite-rod antenna,
    External antenna terminal

    Versions/Power Requirements
    UK / 240 V AC 50Hz (internally switchable to 220 V)
    AEP / 220 V AC 50Hz (internally switchable to 240 V)

    Power Consumption: 15 W

    Similar to the Sony ST-242 FM-AM Program Tuner which has FM and MW only.

  • Net weight (2.2 lb = 1 kg)
  • 4.3 kg / 9 lb 7.5 oz (9.471 lb)
  • Mentioned in
  • -- Original prospect or advert (Sony Neuheiten HiFi80 & Sony'81 Audio catalogues)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual ST-242L dated 1980)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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